PAREX WeatherTech WeatherFlash 20oz Tube
PAREX WeatherTech WeatherFlash 20oz Tube
PAREX WeatherTech WeatherFlash 20oz Tube

PAREX WeatherTech WeatherFlash 20oz Tube

Regular price $27.99 Sale

WeatherFlash liquid flashing and joint filler is used to prepare and seal exterior wall rough openings and detail joints as part of the WeatherTech air and water barrier system.
WeatherFlash is applied to exterior wall assemblies where it functions as part of an air and water resistive barrier system. WeatherFlash is an all-purpose, liquid applied flashing used in construction applications to bridge dissimilar materials and to create weather resistant, fully adhered pan membranes in window and door installations. Liquid Flashing can be applied over surfaces and substrates that have been prepared per the WeatherTech Guidelines. WeatherFlash bonds to most construction materials, such as aluminum, brick, concrete, wood, vinyl, exterior gypsum board, and various other construction substrates.
  • Window and door rough openings
  • Sheathing joints
  • Fastener points
  • Wall penetrations (Beams, pipes, utility boxes, etc.)


  • Single stage product – No mixing needed
  • One step application – No primer required
  • Flashing Fabrics are optional
  • Superior shore hardness – Prevents membrane wear and tear
  • Permeable – Allows substrates to breath
  • High viscosity – Supports gun and spread applications
  • Exceptional adhesion – Bonds to multiple substrates
  • Advanced proprietary technology – Produces a durable seamless membrane
  • Environmentally friendly – Solvent free, isocyanate free and low VOC
  • Wet surface application – Bonds and cures in wet conditions
  • Class A surface burning rated – Provides added fire protection against flame spread and smoke development
  • Contains fungicide – Mold resistant